If you try to create a course that includes a tab in the title (which does not get rendered), you will be able to reach the 'create course' interface, but upon trying to save the page, you get an error, like this:
[3ae24f00] /w/index.php?title=Education_Program:NoDelete/Errorwat_(now)&action=edit Exception from line 68 of /vagrant/mediawiki/extensions/EducationProgram/includes/rows/PageObject.php: The title for a PageObject needs to be valid when saving.
Backtrace:
#0 /vagrant/mediawiki/extensions/EducationProgram/includes/rows/Course.php(313): EducationProgram\PageObject->save(NULL)
#1 /vagrant/mediawiki/extensions/EducationProgram/includes/rows/RevisionedObject.php(263): EducationProgram\Course->save()
#2 /vagrant/mediawiki/extensions/EducationProgram/includes/actions/EditAction.php(466): EducationProgram\RevisionedObject->revisionedSave(EducationProgram\RevisionAction)
#3 [internal function]: EducationProgram\EditAction->handleSubmission(array, EducationProgram\FailForm)
#4 /vagrant/mediawiki/includes/htmlform/HTMLForm.php(443): call_user_func(array, array, EducationProgram\FailForm)
#5 /vagrant/mediawiki/includes/htmlform/HTMLForm.php(385): HTMLForm->trySubmit()
#6 /vagrant/mediawiki/includes/htmlform/HTMLForm.php(400): HTMLForm->tryAuthorizedSubmit()
#7 /vagrant/mediawiki/extensions/EducationProgram/includes/actions/EditAction.php(188): HTMLForm->show()
#8 /vagrant/mediawiki/extensions/EducationProgram/includes/actions/EditAction.php(64): EducationProgram\EditAction->showForm()
#9 /vagrant/mediawiki/extensions/EducationProgram/includes/actions/EditCourseAction.php(94): EducationProgram\EditAction->onView()
#10 /vagrant/mediawiki/includes/Action.php(567): EducationProgram\EditCourseAction->onView()
#11 /vagrant/mediawiki/includes/Wiki.php(428): FormlessAction->show()
#12 /vagrant/mediawiki/includes/Wiki.php(292): MediaWiki->performAction(EducationProgram\CoursePage, Title)
#13 /vagrant/mediawiki/includes/Wiki.php(586): MediaWiki->performRequest()
#14 /vagrant/mediawiki/includes/Wiki.php(447): MediaWiki->main()
#15 /vagrant/mediawiki/index.php(49): MediaWiki->run()
#16 {main}
Version: unspecified
Severity: minor